4 miles in feet

Conversion formula
How to convert 4 miles to feet?

We know (by definition) that: $1\mathrm{mile}=5280\mathrm{ft}$

We can set up a proportion to solve for the number of feet.

Now, we cross multiply to solve for our unknown $x$:

Conclusion: 4 ⁢ mile = 21120 ⁢ ft

Conversion in the opposite direction

The inverse of the conversion factor is that 1 foot is equal to 4.73484848484848e-05 times 4 miles.

It can also be expressed as: 4 miles is equal to $\frac{1}{\mathrm{4.73484848484848e-05}}$ feet.

Approximation

An approximate numerical result would be: four miles is about twenty-one thousand, one hundred and twenty feet, or alternatively, a foot is about zero times four miles.